Model T to OSX Serial Communications - Revision history

99.6.119.22: /* Terminal Program Configuration */

2009-11-11T07:11:54Z

Terminal Program Configuration

← Older revision		Revision as of 00:11, 11 November 2009
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	== Terminal Program Configuration ==		== Terminal Program Configuration ==

			You will need a serial terminal program on your Macintosh. One popular terminal program is [http://homepage.mac.com/dalverson/zterm ZTerm].

	Next, you need to get the line parameters to match.		Next, you need to get the line parameters to match.

99.6.119.22: /* Cable up */

2009-11-11T06:25:41Z

Cable up

← Older revision		Revision as of 23:25, 10 November 2009
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	One issue you do need to care about is cabling. To connect a Mac to a		One issue you do need to care about is cabling. To connect a Mac to a
	M100 you need a "null modem" cable, not a straight-through wired		M100 you need a "null modem" cable, not a straight-through wired
	cable. I ~~suggest a~~ Belkin Serial Laplink cable. They are usually		cable.
	available on the web for <$15. You will need a DB-25 M - M gender
	changer adapter to go with it.		I highly recommend the Belkin Serial Laplink cable F3X171-10.

			They are usually available on the web for <$15. You will need a DB-25 M - M gender
			changer adapter to go with it since the Model T's have female gender serial ports.

	== Terminal Program Configuration ==		== Terminal Program Configuration ==

99.6.119.22: New page: == Mac Serial Ports == On the Mac, your only option is likely to be a USB->Serial adapter for a serial port. There's nothing special about USB -> RS232 serial ports vs. the usual PC com p...

2009-11-11T06:20:13Z

New page: == Mac Serial Ports == On the Mac, your only option is likely to be a USB->Serial adapter for a serial port. There's nothing special about USB -> RS232 serial ports vs. the usual PC com p...

New page

== Mac Serial Ports ==

On the Mac, your only option is likely to be a USB->Serial adapter for a serial port. There's nothing special about USB -> RS232 serial ports vs. the usual
PC com ports. Don't worry about it any more than you would regular com
port.

== Cable up ==

One issue you do need to care about is cabling. To connect a Mac to a
M100 you need a "null modem" cable, not a straight-through wired
cable. I suggest a Belkin Serial Laplink cable. They are usually
available on the web for <$15. You will need a DB-25 M - M gender
changer adapter to go with it.

== Terminal Program Configuration ==

Next, you need to get the line parameters to match.

That means your Mac terminal program should be set to:

Appropiate communications device name
600 baud
8 data bits
No parity
1 stop bit
Flow control DISABLED

I suggest starting at 600 baud and working your way up.

== Model 100 Configuration ==

To match, in TELCOM use the STAT command:

STAT 48N1D<ENTER>
TERM<ENTER>

== Try It Out ==

At this point, you should be able to be able to type characters on one
side and see them on the other. If garbage shows up, you may have a
mismatched parameter.

== Tuning For Speed and Reliability ==

The parameters given above are fairly conservative to make communication reliable with the least number of moving parts. But it's not terribly fast. If you can get flow control working, you should be able to achieve higher baud rates.

Once you have some success with the setup recommended above, you can experiment
with increasing the baud rate and turning on software flow control
(XON/XOFF) on both sides.

== Moving Up ==

Straight ASCII transfers work but more feature-filled systems exist. If you have a REX, dedicated TS-DOS ROM chip, or wish to bootstrap TEENY, you can directly transfer text and binary files and perform those transfers reliably at very high speeds.

To do so you need to use a TPDD (Tandy Portable Disk Drive) emulator. There are two which are compatible with OSX:

* [[HOWTO: DLPlus on OSX|DLPlus]]
* [[LaddieCon|LaddieAlpha]]

These applications let serve files to your M100 from a directory of your choosing on the Mac. The transfer operations are under direct control from your Model T keyboard. That means once DLPlus or LaddieAlpha are started, you "drive" completely from the M100 side